| 摘要 |
<p>The arrangement has at least two detector units (1-3) for detecting light (16) emanating from a document (10) under investigation and at least one dispersion element (5) that scatters the light emanating from the document. The dispersion element(s) and detector units are arranged so that the scattered light can be detected by the detector units. The dispersion element(s) performs diffuse transmission and/or reflection.</p> |
